Yoke for a sprinkler



FIG. 1 is a front elevation of yoke for a sprinkler showing my new design;

FIG. 2 is a rear elevation thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right side elevation thereof; and

FIG. 6 is a left side elevation thereof. 

The ornamental design for a yoke for a sprinkler, as shown. 